code: def test_geo_interface_empty_feature_collection():
      geom = {"type": "FeatureCollection", "features": []}
      feat = geom_obj(geom)
  
      with alt.data_transformers.enable(consolidate_datasets=False):
          spec = alt.Chart(feat).mark_geoshape().to_dict()
      assert spec["data"]["values"] == []
  
file_path: altair/tests/vegalite/v5/test_geo_interface.py
imports: import pytest
  import altair.vegalite.v5
label_desc: Use image node_id 7 for calling a global function with example usage: test_geo_interface_empty_feature_collection() without return types